Oil burning apparatus



NOV. 20, 1934. H. T. EL 1,981,248

OIL BURNING APPARATUS Filed NOV. 28, 1932 INVENTOR, 176727? ZParcelll ATTORNEY.

Patented Nov. 20, 1934 UNITED STATES PATENT OFFICE OIL BURNING APPARATUS Henry- T. Purcell, Norwood, Mass. Application November 28, 1932,'Serial No. 644,704

6 Claims. (01. 158-15) 7 e the head. When slidable as explained it maybe t:

This invention relates to improvements in oil burners and the like.

The principal objects of this invention are directed to the provision of an apparatus of novel form for burning oil or other fuels wherein means are provided for directing air in a relatively flat stream forwardly around and in association with a forwardly directed jet of fuel such as oil and the like.

Various novel features and advantages of the invention will be more fully hereinafter referred to in connection with the following description of the preferred form of the invention. For purposes of disclosure the invention is illustrated in the accompanying drawing wherein;

Fig. 1 is a longitudinal sectional view through an apparatus embodying the novel features of the invention.

Fig. 2 is an end elevational view of the same.

Fig. 3 is a transverse sectional view on the line 33 of Fig. 1.

Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 1, and

Fig. 5 is a transverse sectional view on the line 5-5 of Fig. 1.

Referring now to the drawing in detail the invention will be fully described.

In Fig. 1 there is shown the forward end portion of a tube 2 of an oil burner apparatus. This is the tube which usually extends forwardly from an air supplying apparatus such as a blower or fan, and the end of the tube shown and parts associated therewith are usually disposed within a heating apparatus such as a boiler, furnace, or the like.

The tube 2 in the form of the invention shown is of cylindrical shape but of course it may be of a more or less rectangular shape if desired. A head member 4 of novel form is associated with the outer end of the tube and may be fixed there- 'in in any suitable manner as by a set screw or set screws associated with the end of the tube. In the form of the invention shown, the head is circular in shape, and has on its forward side an elongated opening or slot 6 extending transversely thereof. This opening is preferably formed between spaced lips 8 at the ends of a pair of outwardly extending and converging plate portions 10 at the forward side of the head.

A plate 12 at the rear of the head is provided with a slot 14 which is preferably disposed transversely to the slot 6 at the forward side of the head. This plate 12 may be integral with the head 4 or as shown it may be slidable on members such as rods 15 extending rearwardly from fixed in various positions of adjustment relative to the head by means of set screws 16 and in the operation of the apparatus may be located closely adjacent or at some distance from the head, as may be desired. In all cases the, plate 12 and forward plate portions 10 at the forward side of the head are spaced apart so as to provide a chamber therebetween, the said chamber having a slot leading thereinto at therear side and an outlet or discharge slot at the forward side. A nozzle support 20 is provided at the rear of the head 4 which support may be supported by and be adjustable on the rods 15 sothat it may be moved along the tube 2 and towards and away from the head 4. A bushing 221s removable from the member 20 and is held in placeiby means: of a set screw 24. The bushing receives and supports a tubular part 26 of a nozzle assembly 23 for fuel-oil or the like. A guide member 28 on the forward side of the member 20 is arranged to support another part 30 of the oil burner assembly as shown and a nozzle N of usual form is provided at the forward end of the oil burner nozzle assembly. The assembly is supported by the members 20 and 28 in such a way that fueloil or the like will be directed forwardly by the nozzle and through the slot 6 of the head 4.

Rear ribs or projections 34 as shown in Fig. 4 are provided on the rear face of the plate 12 so as to form pockets therebetween which are adapted to prevent the stream of air in the tube from swirling.

In the operation of the apparatus with the tube 2 properly located in a fire-box of a furnace or the like, and its other end connected to an air supplying means and also with the nozzle assembly 23 connected by means of the pipe 27 to a fuel delivering means, air is delivered to and through the tube 2. The air passes through the vertical opening 14 of plate 12 and then outwardly through the horizontal opening 6 of the head 4. Because the air is passed through the vertically disposed opening and then through the horizontally disposed opening, the air emerges from the slot 6 between the lips 8 or is discharged in a relatively fiat stream with the fuel discharged by the nozzle disposed centrally of the stream.

The nozzle of course may be adjusted forward and back relative to the outlet 6 so that fuel delivered therefrom will be delivered as desired relative to the air stream. It is desired to discharge air from the head in a relatively flat stream of considerable width as compared with its thickness as distinguished from a round bushy roe stream. With a flat stream of air being discharged and in which the fuel is discharged it is possible to operate under conditions where the most efficient and economical operation may be obtained. 7

It will be observed that fuel-oil may be discharged in such a way in relation to the air stream that the same is suitably intermixed with the air and that the air stream may be controlled more or less by adjusting the rear plate relative to the forward plate.

Having described the invention, what I now desire to claim and secure by Letters Patent of the United States is:

1. A fuel burner apparatus comprising in combination, a tube for air, a head in said tube having forward and rear plates. each provided with a slot thereacross, a nozzle assembly extending axially of said slots for directing fuel through the slot of the forward plate, the said rear plate being adjustabletowards and away fromthe forward plate and the said slots in said plates being disposed angularly relative to one another.

2. .In a fuel burner apparatus, an air tube, a head associated therewith having. plate portions extending towards one another and having marginal edges terminating in spaced relation to form a slot therebetween and a plate in said tube spaced rearwardly from said plate portions provided with a slot disposed transversely to the first-named slot.

3. In a fuel burner apparatus, an air tube, a head in the end thereof having plate portions extending forwardly of the tube and towards one another and having marginal edges terminating in spaced relation to form a slot therebetween and a plate in said tube spaced from said plate portions provided with a slot disposed transversely to the first-named slot, the said rear plate being adjustable towards and away from said plate portions.

4. In a fuel burner apparatus, an air tube, a head in the end thereof including forward plate portions extending in a forward converging relation and having marginal edges terminating in spaced relation to form a slot therebetween, a rear plate spaced from said plate portions having a slot disposed transversely to said first-named slot, and rods extending rearwardly from said forward plate portions receivable in openings provided in said rear plate.

5. In a 'fuel burner apparatus, an air tube, a head at the forward end thereof including plate portions extending towards one another and having their marginal edges terminating in spaced relation to, form a slot therebetween, a plate spaced rearwardly from said plate portions having a slot disposed angularly with respect to said first-named slot, and a nozzle support disposed rearwardly of said plate, the said plate being movably adjustable between said forward plate portions "and said nozzle support.

6. In a fuel burner apparatus, an air tube, a head associated therewith including plate portions extending towards one another and having their marginal edges terminating in spaced relation to form a slot therebetween, and a rear plate spaced from the rear side of said plate portions having a slot disposed at an angle relative to the first-named slot, the rear side of said rear plate being provided with relatively high and low portions'to provide pockets at opposite sides of the slot therein. U p I I HENRY T. PURCELL. 

